CVE-2026-104627

The Gitea OpenID association callback in the security settings accepted a positive OpenID 2.0 assertion without checking that the signed-in user had started the linking. Because OpenID 2.0 allows unsolicited assertions, an attacker-controlled OpenID provider could attach the attacker's identity to the account of a signed-in victim who opened a crafted link, and the attacker could then sign in as the victim through OpenID login, which does not apply the local TOTP or WebAuthn checks. The callback now requires a time-limited `state` value bound to the user.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://blog.gitea.com/release-of-28.2.0/
https://github.com/go-gitea/gitea/pull/39642
https://github.com/go-gitea/gitea/pull/39744
https://github.com/go-gitea/gitea/releases/tag/v28.2.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-mf69-7pqq-86vx

Configurations

No configuration.

History

19 Oct 2026, 21:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4

18 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-18 19:16

Updated : 2026-10-19 21:17

NVD link : CVE-2026-104627

Mitre link : CVE-2026-104627

CVE.ORG link : CVE-2026-104627

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

CWE-352

Cross-Site Request Forgery (CSRF)

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